674 SOILS: PROPERTIES AND MANAGEMENT 



paratively large shovels set rather far apart, which vigor- 

 ously tear up the earth to a considerable depth and leave 

 it in large ridges. There is a lack of uniform action, and 

 the bottom of the cultivated part is left in hard ridges* 

 Such implements are now much less used than they were 

 formerly, and may be considered to supplant in a measure 

 the use of the plow, where deep working without turning 



&nJi 



Fig. 70.— Types of cultivators: (1), wheel hoe, or hand garden culti- 

 vator, with attachments; (2), adjustable small-tooth, one-horse 

 cultivator, with duck-foot shovel behind; (3), two- horse spring- 

 toothed cultivator; (4), two-horse sweep or knife cultivator; 

 (5) , two-horse disk cultivator. 



